天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List 1-[1,1'-BIPHENYL]-4-YL-1-PENTANONE
42916-73-4

1-[1,1'-BIPHENYL]-4-YL-1-PENTANONE synthesis

11synthesis methods
-

Yield:42916-73-4 94%

Reaction Conditions:

with aluminum (III) chloride in dichloromethane at 0 - 20; for 3 h;

Steps:

4

In a dry three-necked flask, add dichloromethane (300mL), biphenyl (77.1g, 0.5mol), aluminum trichloride (3.33g, 0.025mol), and cool to 0°C.Start adding valeryl chloride (72.35g, 0.6mol) slowly and uniformly. After the addition, the reaction is stirred at room temperature for 3 hours, and then cooled to below 10°C. The reaction is quenched by dripping water, and the layer is allowed to stand.Separate the water phase, wash the organic phase twice with 50 mL of water, and concentrate the organic phase.The content of 4-pentanoyl biphenyl was determined by gas chromatography to be 98%, and the yield was 94%.

References:

CN112358380,2021,A Location in patent:Paragraph 0080-0081